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Post here if you experience file transfer problems or unexpected errors.
i received the above error after a recent upgrade of a clients server,
the below script is one we use to test the connection.

FTP Script
  1. OUTPUTDETAIL(VERBOSE)
  2. Showing command calls, command messages, errors and server responses
  3.  
  4. Setting protocol to SFTP
  5. Setting TCP port to 22.
  6.  
  7. OPENHOST("xxx","xxx","xxx")
  8. Connecting to xx.xx.com
  9. ····· OPENHOST Error #0
  10. ····· Negotiation failed. Server signature is not valid.
  11.  
  12. ····· CLOSEHOST Error #18001
  13. ····· Not connected to the FTP server. To disconnect connect first.
  14.  
  15. Finished
i need urgent assistance on this.

regards
Hi David,

Please, try using the version 4.3 (which is under beta testing) and let me know if you get the same error.

It can be downloaded from here:

http://www.ScriptFTP.com/beta
Hi

Still getting the exact same error.

please advise
Hello David,

In that case I think I would need access to a test account on that server, if possible. Otherwise I think it is impossible to know why the key negotiation has failed.
A read only account with empty contents is fine, only needed to login. If you think it can be possible please contact me by email.